An idea of more tilling directives
http://www.contextfreeart.org/gallery/view.php?id=2511
As we know, on the 2-dimension plane, tilling patterns can be constructed by some rules.
http://en.wikipedia.org/wiki/Tiling_by_regular_polygons
Could we introduce more tilling directives for these different tilling patterns?
Each tilling design are defined by:
* Several different start shape (maybe more than one)
* A tilling pattern
Is it feasible?
